水氮耦合条件下烤烟叶面积指数变化的模型研究  

Simulation Model of the Leaf Area Index of Tobacco under Water and Nitrogen Coupling Condition

作　　者：侯毛毛[1,2] 邵孝侯[1,2] 袁有波[3] 丁福章[3] 苏贤坤[3] 

机构地区：[1]河海大学南方地区高效灌排与农业水土环境教育部重点实验室,南京210098 [2]河海大学水利水电学院,南京210098 [3]贵州省烟草科学研究所,贵阳550003

出　　处：《灌溉排水学报》2012年第1期106-108,116,共4页Journal of Irrigation and Drainage

基　　金：中国烟草总公司贵州省公司科技项目专项(201020);江苏省自然科学基金(BK2009342);土壤可持续发展国家重点实验室基金(081000033)

摘　　要：在蒸渗仪条件下,对不同水氮互作处理的烤烟叶面积指数随时间(移栽后天数)的变化曲线,建立相关模型,进行拟合分析研究。结果表明,烤烟全生育期内叶面积指数变化呈现缓慢增长,快速增长和衰退3个阶段,水氮互作处理间的叶面积指数相差不大;线性模型和指数模型均能较好的拟合叶面积指数的动态变化,经筛选,指数模型拟合的相关系数和精度较高,参数少,具有更强的实用性。Changes of LAI of tobacco under different treatments of water and nitrogen coupling were analyzed in this article.The simulation models were built based on the curves about LAI varying with time（days after transplanting）.The results show that stages of changes of LAI during growth period of tobacco can be divided into three phases：slower growth period,acceleration period,recession period.LAI of tobacco under different treatments of water and nitrogen coupling had few discrepancies.Dynamic changes of LAI could be expressed well by both linear and exponential models,but linear model were more practical on account of higher correlation coefficient and fitting accuracy and less parameters.

关 键 词：烤烟 水氮耦合 叶面积指数 模型 模拟 

分 类 号：S572[农业科学—烟草工业]